Born in salons and perfected by science each Nexxus system is crafted with proteins extracted from nature s most precious ingredients. Nexxus uses advanced scientific methods to identify the protein needs of hair and we create highly effective custom formulas. Tired of urban living taking its toll on your hair? Nexxus City Shield Conditioner smoothes and nourishes hair while restoring a protective barrier that helps to shield it from damage caused by the urban environment. Formulated with wheat protein this Nexxus conditioner is designed to help moisturize hair improve manageability and reduce frizz - all while protecting your hair from external aggressors and retaining plenty of natural movement.